Windshield cleaner



M. l. KEVARB WINDSHIELD CLEANER Jan. 26 1926.

Filed Feb. 26, 1923 2 SheeJlZS-Sheei'l 1 A i mnu/KEW@ Jan. 26 1926.

1,570,842 M. l. KEVARI WI NDSHI ELD CLEANER Filed Feb. 2e, 1925 2Sheets-Sheet l,PahrrzNT OFFICE.-

MATTI I. KEVABI, 0F BESSEMER, MICHIGAN.

WIN DSEIELD CLEANER.

Application filed `iebruary 26, i923. Serial No. 621,296.

To all whom t may concern: l

Beit known that I, MATTI I. KEvAnI, a citizen of the United States,residing `at Bessemer, in the county of Gogebic and State ofMichiganLhave invented certain new and useful Improvements in WindshieldCleaners, of which the following is a specification.

This invention relates to windshield cleaners, and more particularly toelectrically operated windshield cleaners.

An object of the invention is the provision of an electro-magneticwindshield cleaner having means for returning the mechanism to aninitial position whereby a circuit is automatically closed and the coreof the magnet actuated.

- A further object is the provision of means for breaking the circuitwhen the core or armature reaches a'position at one end of its movement.

A further object is the provision of actuating means including anauxiliary arma-A ture having a contact point to engage a contact on themain armature, to complete a circuit through the coils of the magnet.

In the accompanying drawings, I have shown one embodiment of theinvention. In this showin Figure 1 1s -a perspective view of a portionof a windshield showing the invention applied,

Figure 2 is avertical sectional view on line 2 2 of Figure 3,

Figure 3 is a vertical sectional view on line 3 3 of Figure 2, j

Figure 4 is a horizontal sectional view on line 4 4 of Figure 3,

Figure 5 is a transverse vertical sectional view on line 5 5 of Figure3, and,

Figure 6 is a similar view'on line 6 6 of Figure 3.

Referring to the drawings, the reference numeral 1 designates generallythe wind- Shield., of a motor vehicle, formed of glass or other suitabletransparent material. This windshield is provided with the usual frame2. The windshield cleaner forming the subject matter of the presentinvention consists oa base 3 which 1s adapted to be arranged on'the sideof the windshield tol be cleaned. This base is secured to the windshieldframe by screws 4 or similar fastening .elements passing through'openings in the windshield frame and received in threaded openings in vthe base.

A pair of end plates 5 are arranged on the base and these end plates areadapted to support electro-magnetic coils 6. A sub stantlally U-shapedarmature having arms 8 1s arranged within the coils. The outer ends ofthe arms are connected by a base 9,

as shown. A sliding arm or shaft 10 is arranged between the arms of thecore or armature and connecte-d thereto as shown.. The free end of thisarm projects through an opening 11 in a cover 12, which is secured tothe base in any suitable manner. This member is providedk with anexpansion sprlng 13, adapted to normally hold it in the full lineposition shown in Figures 3 and 4. The spring is arranged between one gfthe end plates 5 and the pin 14, and is adapted to bev compressed whenthe armature is attracted by the magnets .and moved inwardly. A secondspring 15 is arranged between the other end plate and the pin 14 andserves as a shock absorber when the arm is moved outwardly by the spring13. As shown, the arm' passes through libre bushings 16 in the endplates.

An auxiliary armature 17 is mounted on a sliding bar 18 which alsopasses through the end plates 5. As shown, this bar is re ceived inlibre bushings 19 to insulate it from the end plates. The end of thisbar projects through an opening 2O in the casing or cover. This bar isalso provided with a pin 21, arranged intermediate the end plates ed toone of the coils by means of a lead wire 27. The two coils are connectedto each other by a wire 28 and the other coil is provided with a leadwire 29, leading to the other pole of the battery. A suitable switch(not shown) may be arranged in one of the lead wires to open and closethe circuit when desired. .x v

A cleaner arm 30 projects throji h a slot 31 in the bottom of the casingan a cleaner blade 32 which is adapted to concarries tact with `aportion of the windshield for A trip member 36 is arranged on the outvside of the front end'plate 5 and is adapted to engage the auxiliaryarmature 17 when it moves inwardly.

In operation, the parts are normally arranged in the position shown inFigures 3 and 4 of the drawings when the device is not in operation dueto the springs 13 and 22. Then the supply of current is cut oli at lanytime, the springs move the armature and the bar 18 to their outerpositions; The contacts 25 and 26 are in engagement with each other. Ifthe circuit is now closed, current flows from its source through thewire 24 to the armature 8 through the armature to the contact 25 throughthe contact 26, auxiliary armature 17 to-the bar 18. Thence itpasses tothe first coil through the wire 27 and, after passing through the coils,returns to the source of current through the wire 29.

When the coils are energized, the armatureA is attracted and theauxiliary armature also moves inwardly dueto the magnetic iux passingfrom the poles of the electro-magnets. This compresses the springs 22and 13, and moves lthe cleaner arm through an arc of a circle. As thearmatures approach their inner positions, theauxiliary armature 17 isengaged by the pin 36, separatingA the contacts 25 and 26 and thusbreaking the circuit. The magnets are then deenergized and the spring 22returns the auxiliary armature to its initial position. The mainarvmature is likewise returned to its normal position by the spring 13.The strength of the two sprin s is proportionate to the parts to be moveby them so that the bar 18 and auxiliary armature will reach theirinitial position slightly before the main armature. The outward movementof these parts is cushioned `by the sprin s 15 4and 23, thus reducingunnecessary shoe and vibrapeated indeinitely as long as the circuit re-.a

mains closed. The cleaner may be cut otf when desired by opening thecircuit and the parts will assume their initial position, with thecontacts 25 and 26 in engagement with each other, and thus ready tooperate Whenever current is supplied.

It is to be understood that the form of the invention herewith shown anddescribed is to betaken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may be resortedto without departing from the spirit, of the invention or thescope of the 'subjoined claims.

Having thus described my invention, I claim:

1.l An electro-magnetic motor comprisinoa pair of coils, a substantiallyU- hape armature adapted to be moved inwardly when the coils areenergized, an auxiliary armature adapted to complete a circuit throughsaid coils, when the U-Shaped armature is in its outer position, meansfor breaking the circuit when the armature is in its inner position, anda spring to return said armature to its outer position when the circuitis broken.

2. An electro-ma netic motor comprising a pair of coils, a su stantiallyU-shaped armature adapted to be moved inwardly by the energization ofsaid coils', an auxihary armature normally contacting with said shapedarmature to maintain a circuit through said coils, a member arranged inthe path of said auxiliary armature to disengage said auxiliary armaturefrom said main armature and open said circuit, and means for returningsaid armatures to their outer positions when the circuit is opened.

In testimony whereof, I aiix my signature.

MATTI 1. KEVARI.

